One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(3,9)(4,12)(8,14)(10,11)(13,15)(17,18,21,25,22,19,26,24)(20,23,28,31,29,27,32,30)(1,2,4,6,5,8,12,14)(3,7,10,13,11,16,9,15)(1,3)(2,7)(4,10)(5,11)(6,13)(8,16)(9,12)(14,15)(17,19)(18,22)(20,23)(21,24)(25,26)(27,29)(28,31)(30,32) involution — undirected(17,20,21,28,22,29,26,32)(18,23,25,31,19,27,24,30)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.